Plus, if you can find it, Harold Hoffman's books show in great detail the equipment and processes used for rifle barrel making. The equipment overhead is large, and if you have a DIY rifle boring / rifling setup, the time is not inconsequential. Profiling - that's easy. As you said, a few minutes in a CNC lathe. But that's after you have a barrel that's bored straight and accurately, rifled, and straightened and stress-relieved.

06-23-2010, 09:51 PM

1biggun

Quote:

You'll have to machine the barrel anyway. Its not machined for size externally.

Its says AK profile so Im not sure what that is going to be. I hope it is over size. Ill post when I get it. mine was $36 shipped. Im a little unsuure why there so cheap as well. I want to build a target set up but with a 311 bore so i can also shoot surplus ammo with out the pressure increase. 20" is fine with me it will add about 150 or more FPS. I wonder how long they will have them?? I almost called them today.

06-23-2010, 09:55 PM

sjohnson

Quote:

Originally Posted by 1biggun

I just ordered one. I really wish it was not profiled. I rather be able to keep it heavy for a target build. wish they would also sell one unchambered.

I will stick it on a AMD 65 kit and see how it works. the price is right I see its cut rifleing.

Im sure for $30 it will be top quality LOL. I may rechamber it using my reamer see what I get first.

Agree with everything except that it's cut rifling. Button rifling is listed by Green Mountain, and that is not cut rifling, but rather is a type of cold forming where metal is not removed, but rather displaced.

06-24-2010, 04:03 AM

chipmechanic

I bought one too. Wasnt planning on building another AK but this might change my plans. Never know what will come in the mail Still trying to figure out why they charged sales tax and what state its going to.